Ashot Ashot - 14 days ago 9
C++ Question

Qt error: `qApp' was not declared in this scope

As I know qApp is global pointer so it should be accessible anywhere but I am getting this error

error: qApp was not declared in this scope
.

1 #include "textEdit.h"
2
3 TextEdit::TextEdit() {
4 }
5
6 void TextEdit::insertFromMimeData (const QMimeData * source) {
7 if (qApp->mouseButtons() == Qt::MidButton) {
8 return;
9 }
10 QTextEdit::insertFromMimeData(source);
11 }
12
13

Answer

You need to use

#include <QApplication>

to use the qApp macro. See documentation at http://doc.qt.io/qt-5/qapplication.html#qApp